Checklist

• 1. If the issue you raised is not a feature but a question, please raise a discussion at https://github.com/sgl-project/sglang/discussions/new/choose Otherwise, it will be closed.
• 2. Please use English, otherwise it will be closed.

Motivation

The HttpServerEngineAdapter class is a reference implementation for an http wrapper but there is no test cases for it. See #7326 (comment) for more details.

Related resources

No response